Estudo numérico de aterro teste em coluna de brita

• Autor(a) principal: Pereira, Pedro Gomes dos Santos
• Data de Publicação: 2018
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/11499
• topic: Civil Engineering; Clay soils; Foundations (Engineering); Finite element method; Constitutive models; Mohr-Coulomb; Numerical modeling; Settlement; Soft clay; Stone column; Engenharia civil; Solos argilosos; Fundações (Engenharia); Método dos elementos finitos; Argila Mole; Coluna de brita; Modelagem numérica; Modelos constitutivos; Mohr-Coulomb; Recalque; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

The present research aims to do a numerical study using stone column techni-que on a test embankment, located at Santa Cruz, Rio de Janeiro. The em-bankment was built on very soft and compressible clay. Contemporary engineering constantly strives for constructive methods and processes that take into account the efficiency and effectiveness of design in order to achieve satisfactory results and according to the designers prediction. For this reason, it is necessary to improve and verify the analytical and empirical methods previously formulated. Nowadays, with the development of technology and the creation of softwares, classic methods can be analyzed and compared with the finite element method processed by computational efforts, generating database enrichment and academic reviews. This work briefly presents a review of stone columns, addressing installation effects, project calculation methodologies, case studies carried out with this solution, and numerical and analytical studies of stone columns around the world. After this, the objective is focused on numeri-cal analysis of the case study where the data of the instrumentation were measured. These data are compared with the results of vertical displacement, horizontal displacement, excess pore pressure and yield of the columns obtained by two finite element programs: Plaxis and RS2 (from Rocsience). The Mohr-Coulomb model was also compared to the results obtained by the Cam-Clay model made by Lima (2012). The compatibility of the results presented by both finite element softwares was evaluated as satisfactory.